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In this paper, a new method of suppressing the third order intermodulation distortion in directly modulated lasers by RF predistortion has been presented. In our scheme, the predistortion circuit is designed in an RF design tool — Advanced Design System (ADS), then we use the co-simulation between ADS and Optisystem for validation the effectiveness of the design. Using this scheme, we achieved the...
We experimentally investigate the impact of crosstalk on the performance of MB-OFDM UWB signal transmission in RoF WDM system. It is found that OFDM signal's orthogonalities are almost kept after 20 km of fiber transmission even under adjacent channel crosstalk level of -5 dB. MB-OFDM UWB over fiber is robust to crosstalk from other channels.
This paper, for the first time to our knowledge, introduces a power control technique for radio-over-fiber (RoF) downlinks in frequency division multiplexing (FDM) cellular communication systems. The power control technique, which has been widely used in traditional wireless systems, is to radiate sufficient power to establish an adequate service for a particular distance. Due to RoF link nonlinearities,...
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